Решение:
1) (x²-y³)² = x⁴- 2x²y³ + y⁶
2) (a + b)²- (a - b)² = a² + 2ab + b² - (a² - 2ab + b²) = a² + 2ab + b² - a² + 2ab - b² = 2ab + 2ab = 4ab
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Решение:
1) (x²-y³)² = x⁴- 2x²y³ + y⁶
2) (a + b)²- (a - b)² = a² + 2ab + b² - (a² - 2ab + b²) = a² + 2ab + b² - a² + 2ab - b² = 2ab + 2ab = 4ab